PPM
Description: Proper motions and parallax associated with defined objects. 

Name Unit Data Type Size Default Value Description
objID		BIGINT 8 NA ODM object identifier
ippObjID   	BIGINT 8 NA IPP object identifier index
ppmID           BIGINT 8 NA ppm object identifier ( ppmToObject metatable?)
meanEpoch	FLOAT 	8 	-999 	mean epoch of observations in Mean Julian Days
elapseTime 	REAL 4 -999 Elapsed time of astrometric observations
muRa 		REAL 4 -999 proper motion in RA
muRaErr 	REAL 4 -999 error in proper motion in RA
muDec 		REAL 4 -999 proper motion in DEC
muDecErr 	REAL 4 -999 error in proper motion in Dec
mu 		REAL 4 -999 total proper motion
muErr 		REAL 4 -999 error in total proper motion
theta 		REAL 4 -999 angle of parallax vector from N in degrees
plx 		REAL 4 -999 total parallax
plxErr 		REAL 4 -999 error in total parallax
nAstro 		SMALLINT 2 -999 number of measures in astrometric fit
rmsRA 		REAL 4 -999 rms of astrometric error in RA
rmsDec 		REAL 4 -999 rms of astrometric error in Dec
wiggle 		TINYINT 1 255 flag/pointer to astrometric orbit



